SEER savings
PlannedCompare the estimated operating cost of two air conditioners or heat pumps.
Efficiency
Know what an HVAC replacement should cost.
Build a realistic US replacement budget, see every assumption, and compare contractor quotes without handing over your contact details.
Start with the decision in front of you.
The replacement-cost model uses US reference ranges, editable project details, and a published methodology.
HVAC replacement cost
AvailableEstimate a US installed-cost range from home size, system type, efficiency, ductwork, and local labor costs.
CostOpen calculator
Heat pump vs. gas furnace
PlannedCompare annual heating costs using your utility prices and equipment efficiency.
Efficiency
AC replacement cost
PlannedEstimate an installed central air budget without mistaking it for a contractor quote.
Cost
Furnace replacement cost
PlannedPlan for equipment, labor, venting, removal, permits, and likely extras.
Cost
AC sizing screen
PlannedGet a broad capacity range and learn what a proper Manual J calculation still needs.
Sizing
A useful estimate shows its seams.
Inputs
Change the assumptions instead of accepting a mystery average.
Math
See what the calculator adds and where uncertainty enters.
Limits
Know when you need a quote, inspection, or load calculation.
Research the scope, not just the total.
Short, sourced guides for the decisions a cost range cannot make for you.
Browse all HVAC guidesAC replacement cost: build a realistic budget
Costs · 3 min
Plan a central AC replacement budget by separating equipment, installation, efficiency, duct, electrical, permit, and comfort-related costs.
AC sizing and Manual J: what homeowners need
Sizing · 3 min
Learn why square footage alone cannot size an air conditioner and what homeowners should expect from Manual J, Manual S, and duct design.
Furnace replacement cost: quote checklist
Costs · 3 min
Understand the equipment, venting, gas, electrical, duct, permit, testing, and warranty items that shape a furnace replacement quote.
A planning range, not a sales lead form.
HVAC Cost Check does not sell contractor leads, require an email address, or hide the result behind a phone number. Calculator inputs stay in your browser.
Every published model lists its review date, calculation method, source references, and known limits. The result is a starting point for comparing written quotes. It is not a bid, equipment selection, or substitute for a home inspection.